Number of participants symptomatic for COVID-19. (Symptomatic illness will be defined as presence of fever with cough; shortness of breath; sore throat; anosmia or diarrhoea) [Time frame: from the time of recruitment until the completion of 14 days]Number of participants testing positive for SARS-CoV-2 virus using rRT-PCR [ Time frame: day 14 from the time of recruitment]

Number of participants symptomatic for COVID-19. (Symptomatic illness will be defined as presence of fever with cough; shortness of breath; sore throat; anosmia or diarrhoea) [Time frame: from the time of recruitment until the completion of 14 days]Number of participants testing positive for SARS-CoV-2 virus using rRT-PCR [ Time frame: day 14 from the time of recruitment]